Use of Fe2O3 nanoparticles in sustainable construction LID systems
Abstract
Nanotechnology has numerous applications in the field of sustainable construction, which have allowed to save energy, minimize the use of non-renewable resources and reduce the generation of solid waste, as well as the toxicity of atmospheric emissions. Concerning the protection of the aquatic environment, this technology can provide useful materials for the control of urban runoff pollution through LID (Low-impact development) systems, such as permeable concretes. In this work the oxidation potential of nanoparticles (NP) of Fe2O3 was evaluated towards pollutants commonly present in urban runoff. Synthetic urban runoff (AEUs) was prepared with 2 ppm of N-NH4 +, 0.1 ppm of N-NO2-, 4 ppm of NO + and 2 ppm of phenol (C6H60). 35 mL of AEUs and 0.01 grams of NP were placed in Petri dishes and then exposed to sunlight. After eight hours, the oxidation of phenol and ammonium was observed. Our results indicate that Fe2O3 nanoparticles could be used to cover permeable pavements and to diminish the pollution coming from urban runoff.
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References
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